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First experimental constraints on WIMP couplings in the effective field theory framework from CDEX

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arxiv 2007.15555 v2 pith:BAFDACDK submitted 2020-07-30 hep-ex hep-phphysics.ins-det

First experimental constraints on WIMP couplings in the effective field theory framework from CDEX

Y. Wang , Z. Zeng , Q. Yue , L. T. Yang , K. J. Kang , Y. J. Li , M. Agartioglu , H. P. An
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J. P. Chang J. H. Chen Y. H. Chen J. P. Cheng C. Y. Chiang W. H. Dai Z. Deng C. H. Fang X. P. Geng H. Gong Q. J. Guo X. Y. Guo H. J. He L. He S. M. He J. W. Hu T. C. Huang H. X. Huang H. T. Jia L. P. Jia X. Jiang H. B. Li J. M. Li J. Li M. X. Li R. M. J. Li X. Li Y. L. Li B. Liao F. K. Lin S. T. Lin S. K. Liu Y. D. Liu Y. Liu Y. Y. Liu Z. Z. Liu H. Ma Y. C. Mao Q. Y. Nie J. H. Ning H. Pan N. C. Qi J. Ren X. C. Ruan C. S. Shang V. Sharma Z. She L. Singh M. K. Singh T. X. Sun C. J. Tang W. Y. Tang Y. Tian G. F. Wang L. Wang Q. Wang Y. C. Wang Y. X. Wang Z. Wang H. T. Wong S. Y. Wu Y. C. Wu H. Y. Xing Y. Xu T. Xue Y. L. Yan N. Yi C. X. Yu H. J. Yu J. F. Yue M. Zeng B. T. Zhang L. Zhang F. S. Zhang Z. Y. Zhang K. K. Zhao M. G. Zhao J. F. Zhou Z. Y. Zhou J. J. Zhu
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classification hep-ex hep-phphysics.ins-det
keywords effectivefieldtheoryapproachcdexcdex-10couplingdata
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present weakly interacting massive particles (WIMPs) search results performed using two approaches of effective field theory from the China Dark Matter Experiment (CDEX), based on the data from both CDEX-1B and CDEX-10 stages. In the nonrelativistic effective field theory approach, both time-integrated and annual modulation analyses were used to set new limits for the coupling of WIMP-nucleon effective operators at 90% confidence level (C.L.) and improve over the current bounds in the low $m_{\chi}$ region. In the chiral effective field theory approach, data from CDEX-10 were used to set an upper limit on WIMP-pion coupling at 90% C.L. We for the first time extended the limit to the $m_{\chi}<$ 6 GeV/$c^2$ region.

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